They are relatively prime, so the gcf is 1
The GCF is 70.
The GCF is 70.
The GCF is 27.
The GCF of 27, 54 and 81 is 27.The GCF of 27, 54 and 81 is 27.
The GCF is 27.
The GCF is 5.
The GCF is 14.
The GCF is 5.
The GCF is 70.
The GCF is 2.
The GCF is 70.
The GCF is 70.